#include<stdio.h>

int main(int argc, char *argv)
{
	int m = 999;
	int *p;
	printf("%d", *p);
	int *q = NULL;
	printf("p:%p , q:%p\n", p, q);

	p = &m;
	printf("p: %p, m: %p\n", p, &m);

	*p = 9999;
	printf("m:%d\n", m);

	printf("sizeof(%ld)\n", sizeof(p));
	printf("sizeof(%ld)\n", sizeof(int *));

	return 0;
}


